We recommend you a very useful site for checking any mailing address. This service easy to use and called Email Check. This is a method of communication between email servers and check if the user and mailbox really exist. This way, you can find out if the email can accept your letter or not.
Start checking for: sdfsdf@gmail.com
MX records:
5 gmail-smtp-in.l.google.com
10 alt1.gmail-smtp-in.l.google.com
20 alt2.gmail-smtp-in.l.google.com
30 alt3.gmail-smtp-in.l.google.com
40 alt4.gmail-smtp-in.l.google.com
Search IP addresses for gmail-smtp-in.l.google.com
Successfully connected to an intermediate server
connected to 209.85.233.27
220 mx.google.com ESMTP rh2si101gerg3jbw.298 - gsmtp
250 mx.google.com at your service
VRFY sdfsdf@gmail.com
252 2.1.5 Send some mail, I'll try my best rh2si101gerg3jbw.298 - gsmtp
RSET
250 2.1.5 Flushed rh2si101gerg3jbw.298 - gsmtp
MAIL FROM:<example@gmail.com>
250 2.1.0 OK rh2si101gerg3jbw.298 - gsmtp
RCPT TO:<sdfsdf@gmail.com>
552-5.2.2 The email account that you tried to reach is over quota. Please direct
552-5.2.2 the recipient to
552 5.2.2 https://support.google.com/mail/?p=OverQuotaPerm rh2si101gerg3jbw.298 - gsmtp
RSET
250 2.1.5 Flushed rh2si101gerg3jbw.298 - gsmtp
QUIT
221 2.0.0 closing connection rh2si101gerg3jbw.298 - gsmtp
Connection close
can not receive the letter because it exceeds the quota. You can also check the address that will interest you here
.